I go just to see the sharing time. The quilts motivate me to get moving on my own projects (sometimes they motivate me, lol). There have been a few presentations that blew my socks off - and others, oh well - not into the artsy quilt bit.
So - yes, even if a guild is large (and the one I go to is large), and if inexpensive enough ($20 a year for mine), I think it's worth it.
Ever thought of starting your own quilt club? Just to have a few quilters get together every month to sew & chit chat???